Improvement in plows



S. HALL.

Flows.

Patented Nov ,.18,1873.

UNI ED STATES PATENT OFFICE.

JOHN S. HALL, OF PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN PLOWS.

Specification forming part of Letters Patent No. 144,760, dated November 18, 1873; application filed June 20, 1873.

To all whom it may concern:

Be it known that I, JOHN S. HALL, of Pitts burg, in the county of Allegheny and State of Pennsylvania, have invented a new Improved Plow; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing forming part of this specification, in which- Figure 1 is a side elevation, and Fig. 2 a rear elevation, of my improved plow.

The invention relates to that class of plows having reversible mold-boards, and will first be fully described, and then pointed out in the claim.

In the drawing, A represents the beam of a plow, provided with a handle projection or plate, a, quite or nearly at right angles to the rear thereof. It serves the several purposes of suspending the hook B that holds the moldboard (Jon either side of beam, of forming a secure support for the handles D 1), and also serves conveniently to hold a wrench, E. In order to serve these purposes, it is perforated at a for the hook, at a a for the bolts that hold the handles, and vertically at a to hold the wrenches. The hook possesses great utility in bracing the mold-board and beam against any strain which tends to destroy their relative position, and this end is attained by its connection with the rear end of mold-board and the rear end of extension to. This beam has also two branches, A A that form the land-side, the former having a vertically-perforated foot, a, which is held to thesole F by a screw, G, whose head is secured in the sole, while the shank extends up through the foot and receives a nut, G. The other branch,A has its end forwardly obliqued and passed into a socket. I is a slotted wedge, which passes between the foot a and the sole, being movable on the clamp-screw to regulate the pitch or depth of the plow. Of course, as the wedge is driven to a greater or less extent, the front end of beam is depressed, and the horses thereby compelled to lift the point of plow higher and higher. The mold-board O has an angular subjacent piece, 0, in which enters a rear pivot, 0 journaled in a front end bearing, j. At the other end of sole is another end bean ing, f, into which works the pivot 70 of a connecting-bar, K, which is secured, by branches k k or otherwise, to the mold-board. This bar is secured to the inner side of mold-board. L is a clamp-screw, secured, by a hook, I, to a perforated stud, c projecting from the inside, and near the front end, of mold-board. This screw has a threaded end, which passes through the bar K and receives the clamp-nut L.

By this construction, a slight effort will ena ble the pivots k to be inserted in the end bearings f f, when the screw L and nut L will serve to clamp them in position, yet not with so much pressure as to prevent the pivots from readily turning whenever the mold-board is to be reversed.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The branches A A of beam and the sole F, constructed and combined with the nut-screw and slotted wedge in the manner and for the purpose specified.

JOHN S. HALL.

Witnesses:

SoLoN C. KnMoN, JAMES H. GRIDLEY. 

